This unique kit has everything needed (less safety fuse) including tool set to construct and enjoy 30 ear piercing whistles. Simple and foolproof! Kit contains; enough longer tubes (you cut to length) for 30 casings (3/8" ID), 30 bottom plugs, reusable tool set, chemicals and complete instructions. Amaze everyone - use them in combination with other effects for dazzling results or attach a guide stick (long enough to balance at open end of tube) and launch them like high power bottle rockets! For best results, use and arbor press, hydraulic press or similar to compress the mixture with a case reinforcing sleeve in place to support the tube - stock #CRS2Z (not supplied). Kit no longer comes with pre-cut tubes. They are now longer to cut to spefications.